<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>电子班牌</title>
  <meta http-equiv="Expires" content="0">
  <meta http-equiv="Pragma" content="no-cache">
  <meta http-equiv="Cache-control" content="no-cache">
  <meta http-equiv="Cache" content="no-cache">
</head>
<body><div id="app"></div></body>
</html>
